aktiviti pecahan

8/17/2019 Aktiviti Pecahan

1/8

MEP: Demonstration Project Y7A, Unit 10

© The Gatsby Charitable Foundation

UNIT 10 Arithmetic: Fractions Activities

Activities

10.1 Introducing Fractions

10.2 Making Fractions

10.3 Equivalent Fractions 1



Notes and Solutions (2 pages)


2/8



Ask 8 pupils to come to the front of the class.

They are to stand if the answer to the question is 'yes' and sit down if the answer is 'no'.

The class have to state, for each question, what fraction of the children at the front are

standing.

1. Are you a girl?

2. Are you age 11?

3. Do you have a brother?

4. Do you have more than one brother or sister?

5 . Do you suppor t Manchester United?

6. Do you p lay a musical inst rument?

7. Do you have a pet animal?

8. Do you like eating peanuts?

9. Did you watch Neighbours yesterday?

10. Do you like Maths?

The activity can be repeated with different size groups or even the whole class!

This is a whole class activity

ACTIVITY 10.1 Introducing Fractions


3/8



ACTIVITY 10.2 Making Fractions

This activity can be carried out as a competition with two groups of 3 pupils at the front of

the class, or as a whole class activity.

One pupil is given a horizontal bar made out of card (which can be used as a minus sign or

a fraction line); the other two pupils are each given one piece of stiff card, hardboard or

similar, with a single digit on it. The numbers must be large enough for the whole class to

see them.

Start with the two numbers 6 and 9, written so that they can be used either way up to

create '6 and 6' or '9 and 9' as well as '6 and 9'.

6 6

1. Ask the three pupils to use their three cards to show:

(a) the smallest fraction possible,

(b) the largest fraction possible,

(c) one,

(d) one in a di fferent way.

Now introduce another set of digits, e.g. 1, 2 and 4, and the horizontal bar, this time with

groups of 4 pupils.

2. Ask the pupils to show, using all three digits:

(a) the smallest fraction,

(b) the largest fraction,

(c) the fract ion nearest to one half ,(d) three.

Many other questions can be posed with different sets of digits.


4/8



This is an activity for the whole class and is best put into practice with the pupils in rows of

equal numbers (see sketch below).

Each pupil in Column 1 is given a

sheet of paper with just one fraction

on it – but with space for another

7 fractions.

They each write down a fraction which

is equivalent to the one already on the

paper, and quickly pass it on to their

neighbour in the row.

The process continues until the last person in the row writes down their equivalent fraction.

Note that:

1. all entries must be written in secret so that pupils in

other rows cannot see what is being written;

2. all equivalent fractions must be different along the

row;

3. you must check the papers to see that the fractions

are all correct (another version is for pupils to write

their fractions on an OH slide, and then put them on

the OHP to check).

Variation

1. The first pupil in the row chooses the fraction.

2 . Use Columns ra ther than Rows.

3. Give more complicated fractions (e.g.25

100

3

51 or ).

ACTIVITY 10.3 Equivalant Fractions 1

1 2 3 4 5 6 7

Columns

Rows

1

2

3

4

1

3

1

4

1

5


5/8



ACTIVITY 10.4 Equivalent Fractions 2

0

1

1

1

1212

11

11

10

10

9

9

8

8

7

7

6

6

55

4

4

3

3

1

2

2

2

912

612

312

412

812

212

112

512

712

1012

1112

1

11

2

11

3

11

4

11

5

11

6

11

7

11

8

11

9

11

10

11

5

10

2

10

8

10

9

10

7

10

6

10

4

10

3

10

1

10

3

9

6

9

2

9

1

9

4

9

5

9

7

9

8

9

2

8

4

8

6

8

7

8

5

8

3

8

1

8

1

7

2

7

3

7

4

7

5

7

6

7

4

6

3

6

2

6

1

6

5

6

15

45

25

35

3

4

2

4

1

4

2

3

1

3

012

0

11

0

10

0

9

0

8

0

7

0

6

05

0

4

0

3

0

2

To find a fraction equivalent to3

5, place a ruler vertically at

3

5. The fraction

6

10 is on

the same line, so3

5 and

6

10 are equivalent fractions.

Using the fraction chart and a ruler, write down the equivalent fractions of each of the

following:

1. 12

= 2. 23

= 3. 26

= 4. 15

= 5.3

4=

Fraction Chart


6/8



ACTIVITY 10.5 Equivalent Fractions 3

Complete each of the following so that the fractions in are equivalent to those in :

1. 2.

5

6

18

12

24

36

3

4

28

12

100

40

12

3

16

24

6

6010

5

3

15

100

20

5. 6.

40 21

60

3

7

35

2164

2

2

4

8

3. 4.


7/8



ACTIVITIES 10.1 - 10.5 Notes and Solutions

Notes and solutions are given only where appropriate.

10.2 1. (a)6

9(b)

9

6 (c) and (d)

6

6

9

9 or

2. (a)1

42(b)

42

1 (c)

4

12(d)

12

4

10.4 1. 1

2

2

4

3

6

4

8

5

10

6

12= = = = =

2.2

3

4

6

6

9

8

12= = =

3.2

6

1

3

3

9

4

12= = =

4.1

5

2

10=

5.3

4

6

8

9

12= =

10.5 1. 2.

18

36

5

6

12

2428

12

3

4

100

40

9

21 75

30

20

10

30

15


8/8



ACTIVITY 10.5 Notes and Solutions

3. 4.

5. 6.

49

140

3

7

35

2180

4

4

8

64

2

2

40 32

1

21 9

15

60

12

3

16

24

6

6010

5

3

15

100

20

1

2 20

4

8 40

4

2

aktiviti pecahan

Documents